Type-writing machine.



PATBNTED DEC, 25, 1906.

J. G. MQLA JGHLIN. TYPE WRITING MAUI-ENE.

APPLICATION FILED NOV. 20. 1905.

'3 SHEETS-SHEET 1.

No. 839,409. PATENTED DEC. 25, 1906. J. O. MGLAUGHLIN. TYPE WRITING MACHINE.

APPLICATION FILED NOV. 20, 1905.

3 SHEETS-SHEET 2 PATENTED DEC. 25, 1906.

J. C. llioLAUGHLIN. TYPE WRITING MACHINE.

APPLICATION B11321) NOV. 20. 1905.

3 SHEETS-SHEET 3.

. Improvements in Typc-Writing Machines, of

and particularly to the mechanism in frontwhich the ribbon is caused to cover and unposition as at Fig. 1.

UNITED sTATEs rntrnn'r omen.

JOHN (J, MCLAUGHLIN, OF NEW- YORK, N. Y.,' ASSIGNOR TO UNDERVVOOD TYPEWRITER COMPANY, OF NEW YORK, N. YQ, A CORPORATION OF NEW JERSEY.

TYPE-MIRITING MACHINE.

Specification of Letters Patent.

Patented. Dec. 25, 1906.

Application filed November 20,1905. Serial No. 288.177.

4 To all whom it may concern:

' Be it known that 1, JOHN C. MCLAUGIILIN, 'a citizen of, the United States, residing in Manhattan borough, city of New York, in the county of New York and State of New York; have invented certain new and useful which the following is a specification.

This invention relates to the ribbon-controlling devices of type-writing machines,

strike and other visible-writing machines by cover the printing-point at each type-stroke.

The object of my invention is'to produce a simple-and satisfactory mechanism for enabling the operator to bring into use either the upper or lower color-band of a polychromatic ribbon and also to silence the ribbonvibrating mechanism during the operation of l the types at will, so as to adapt a machine for writing stencils.

In carrying out my inventionl provide between the universal bar. and the ribbonvibrating lever of the well-known Underinto use so as to elevate the ribbon either more or less at the type-strokes, according to the particular color-band which it is desired to use. A suitable linger-piece is also pro-- vided for bringing either of the steps into use or for silencing the ril. bon-vibrating mochan'ism, as may be desired.

In the accompanying drawings. Figure l is v a sectional side elevation taken. through the ribbon mechanism of an Underwood typewriting machine and showing my improve-i menls applied thercio. A type is shown as printing through the lower color-band on the ribbon. Fig. 2 is a rear elevatlonoi1hcribbon mechanism, the parts being in the same Fig. 3 is a plan of'thc ribbon mechanism, the parts being seen anjusted so as to cause the lower color-band on the ribbon lo print, as at Figs. and L. Fig. is a plan showing parts seen at Fig. 3, but adjusted so as to cause the upper color-band on the ribbon to print. f

usual in the Underwood type-writing machine, type-bars 1, carrying upper and l l i lower case typos s1 IihC rcarwardly through i a ribbon carried by spools 3 4 against a platen 5. The latter is usually mounted in a frame or carriage (not shown) which runs upon a rail 6. and this rail is shiftable up and down. together with the platen-frame and platen. to enable the upper and lower case types to print. In the different figures the platen is represented in its depressed or lower-case posi'iion. At each type impression the ribbon is first vibrated up to cover the printing-point and then down to disclose thewriting. these movements being eifected by a verticallysliiiing, carrier 7, which stands in front of the platen and is suitably guided. This ribboncarrier is guided by a levcr'comprising arms 8 :and 9 and pivoted at 10 upon a bracket 11,

third order. This lever is pivoted at its lower end upon a shoulder-screw 13 and at its upper end is provided with 'a slot 14' to on a e a wrist 1 5 which is rovided on the top'of the lever-arm 9. The slot 14 extends up and down, sons to acconnnodate the shiftmg movement of the ,wrist 15 when the lever 8 9 is carried up and down by the rail 6.

The-lever 12'is operated by means of a frame 16. hinged atitsrear end to vibratory supports 17, carrying at the forward end a segmental universal bar 18, which is moved backwardly at each typc-szrokc and is returnod by a spring 1!) during the return of the typo-bar to normal |)Hl\'lll0ll.- A plate or member 2i), scoured upon said frame 16, is provided with steps 2! 22, the forou-r being seen at Figs. '1 2, and 3 in engagement with the upstanding lever 12, whereby the latter is given the maximum stroke, since the step 21 is longer llZiLll the stop 22.' .111 consequence, the ribbon is carried up so for that its lower ('()l( l:l) 1l.ll(l 23 is brought into use, as itt Fig. l. The lever is shiitablc from left to right at Fig. 3, so as to be cngagcnblc by the short stop. '22. 1 For this pur iosc the lever is mounted-upon a slide 74, movable transvcrsclv ol' the machine. ll: will bc sccn that the pivot-screw 13 of the lcvcr is threaded into a bracket 2:), which is supported by screws 26 upon said slide 24. The lever is also supported by a screw 27, which engages a slot 28, cut into the lever concentrically with the pivot 13. The slide 24 rests upon a .lixed bar 29 of the framing of the'inac'hinc and is guided by means of screws 30, the lat.-

use.

on the ribbon-lever 8 9 is of suflicirnirlmigth to thereoi'.

5 claim 7 1. In a type-writing machine, the combi ve sa bar havingst ter enga ingslotfsfil inthe slide. The slide is provi ed with an extension or link 32,

"which loosely enga es a pin or screw 33, projectin rom a roe -arm 34, the latter fixed upon'n rock-shaft 35. wbioh extends 'l'or-" 'wardly to the keyboard, and is there provid- I By deprossing ed with arms 36 and keys 37.

lirst one key and'thcn the other, the shaft. 35 is rocked baolgand forth, together-with ihe 1o arm. 34, andcorresponding reciprocation is l aireii rd ugly the given to the slide 24, an upstanding lever 12 shifted bodily into po-' sition for engagement by either of the steps 21 22 of the universal-bar frame. Wnun i 5 the slide is moved to the Fig.4 position, the

step 22 is brought into play and 'consoquently the lever 8 9 and the carrier Z are given mininmm-"trokes, whereby. the upper color-band-38of the ribbonfis brought into It will be seen at Fig.3 that the stud l5 accommodate the sniftin movements of the upstandinglever. l2.- i he bracket "24 isdetainedat either end of its stroke by means of 2 5 aspring-detent 39, engaging either of notches Al), formed inan arm ,41 dependingi from the shaft 35. Said arm-41 is provided withan intervening notch--12 for. holding the shifts able parts in a positionf'midivay between.

. o 'heir extreme position-3,. and at this time the upstanding lever 12 standsopjmsit a notch or rceess43, formcdin'the member 20 between tlie step's 21 and22, said notch being so deep as topermit thelcver I2t'o stand 5 still durinr the movemententireuniversal bar, there v silen'cin the ribbon-vibrating meehaniis'm during t- 1e type-strokes. The spring 4.4 serves to return the upstanding lever 1 to normal position for each actuation Variations may he resorted to} within the scope of my invention, vand portions of my im roveinents may be used withoutlothers. Iaving thus described I); invention, 1 I

nation with asliding ribbon-carrier, of a universal bar having steps, aleil'eradjustable along said-steps so as to be ngageable by 50 either thereof, and a lever foi transmitting movement hetwee' adj ustahle lever an said slidingribbon-ea'rnior. i Q 12,-, In a type-Writing machine, the eombimi i with a sliding iibimmcarrier, ofa uni-' lover adjustable along said steps sees a ongageableby either thereof, and a'le r transmitting movement between saidad istable lever and said sliding riblmn-carrier; said'lstqps three in number and so (onstrncte at at one adjustment. of said lever theup rtefig of the ribbon is vaused to covertheprintin point at the typo-strokes, and at another a ustnu-nt the ribbon-carrier is siloneed at the 5 plbltingstrokes,

3. In a type-writing machine. the vombination with a sliding ribbon-carrier. ofa universal-bar having steps, a lever adjustable along said steps so as to be ongagcable by vithcr'theroof, and a lever for transmitting movement between said adjustable lever and said sliding ribbon-earrier: saiiLstcps being, three in nninber and so coustructcd that at?" one adjustment of said lcvel' the upper edge of the ribbon is caused to cover the printingpoint 'at the t 'pwstirolws, and at another adjustmont the ribbonwarrier is sileueod at the printing strokes: the step for causing the riblion-currihr'to be silenueo being provided between the other two steps.

4. lo a typo-writing nun-lune, the combination with a sliding ribboii-carrier, of a universal bar, a lever mountcd'u mu the framework, steps intervening between said univer-- sal bar and said lever, and means being pro vidcd 'for enabling relative adjustment of said universal bar, said steps and said lever so as to. cause the latter to be operated by either one orauother of said steps at will, a lever operable by said lever, and a sliding vibrator operable by the last-mentioned lever.

5. in a type-writing maohine, the combination with a ribln'ni-oarrior, of a universal bar having steps, a lever mounted upon the framework and adjilst able so as tobo engageable by one or another of said steps, a iingerpiece at the keyboard of the machine for controllingthe adjustment of said lever relatively to said ste.ps,and a lever operating between said lever and said ribbon-carrier.

' 6. In a typeovriting machine, the combis nation wvitha ribbon-carrier, ot a universal bar having steps, a slide mountedmpon the framework, a. lever mounted upon said siide. iii-position to be operated by either of'saidsteps, a link, Connected. to said slide, a. rockshaft connected to.said link and bearing a '8. In a type-writing maehine, theeomhination with a sliding ribhon-carri'erilofa uni-' versal-bar, a slidemonnted upon-t e frameworkfa" lever pivoted upon said slide, steps providedi'upon said universal bar to engage said lover, a' recess intervening between said .steps sons to silence the lever, is. fin er-piece" connected to said slide, means for d etanfing said slide-with the lever'either opposite one or the other of said steps oropposite said reeess, at will, a shiftrail of the carriage mecl1- anism, and a lever mounted upon said shiftrail and having a pin-and-slot connection on said lever, and also having-a connection with said ribbon-carrier.

9. In a type-writing machine, the combination with a sliding ribbon-carrier, of a universal bar, a slide mounted upon the framea rail and having a pin-and-slot connection on 20 said lever, and also havmg a connection with said ribbon-carrier; said. finger-piece being mounted'upon a rock-shaft at the keyboard of the machine, and said rocl shaft having a link connection with said slide, said link extending in a direction at about right angles with the movement of said universal bar.

10. In a type-writing machine, the com'bination with a ribbon-carrier, of a universal bar having ste s, a slide mounted upon the framework an provided with a finger-piece, a lever mounted upon said slide so as to be adjustable along said steps, a spring for returning said universal bar to normal position, a spring for returning said lever to normal position, and a lever transmitting move-- ment from said lever to said ribbon-carrier.

11. In a type-writing machine, the combination with a ribbon-carrier, of a universal bar movable forwardly and rearwardly, an upstanding lever,.a support upon which said lever is pivoted below said universal bar, said support being movable from side to side or transversely of the movement of said universal bar, etc s upon said universal bar for en- 'gaging sair lever, and a lever connected to said lever above said universal bar and also connected to said ribbon-carrien JOHN C. MoLAUGHLIN Witnesses:

C. STIOKNEY, KITTIE FnANKFonT. 

